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Double Agents: Engineered Bacteria Tackle Pathogenic Biofilms in Mice

Mycoplasma pneumoniae with pathogenic genes replaced by biofilm-degrading ones enhance survival in a mouse model of ventilator-associated pneumonia.

Written byKatherine Irving
| 3 min read
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Mycoplasma pneumoniae are tiny bacteria typically known to cause lung infections. But now, a group of scientists have turned them into double agents. Genetically engineered Mycoplasma helped break down biofilms of another pathogenic microbe, Pseudomonas aeruginosa, in a mouse model of ventilator-associated pneumonia and on tube samples taken from human patients, the team reported January 19 in Nature Biotechnology. It is one of the first times that scientists have used live bacteria to treat a lung disease, and is the first therapeutic use of Mycoplasma.

“This approach is really powerful,” says Dave Hava, a microbiologist who wasn’t involved in the research, but who works at a company called Synlogic that develops live bacteria therapeutics for gut issues. “It offers the chance to target diseases and mechanisms that you can’t do with conventional therapies.”

When harmful bacteria invade our bodies, they can sometimes take up residence in the form of a ...

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Meet the Author

  • A black and white headshot of Katherine Irving

    Katherine Irving is an intern at The Scientist. She studied creative writing, biology, and geology at Macalester College, where she honed her skills in journalism and podcast production and conducted research on dinosaur bones in Montana. Her work has previously been featured in Science.  

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